Which to use
“sein” is a verb and “sin” is a preposition - they look or sound alike but fill different roles in a sentence.
- #45,601
- “sein” frequency rank
- #41
- “sin” frequency rank
- 45642
- confusion score
Side-by-Side Comparison
| Feature | sein | sin |
|---|---|---|
| Definition | Ser, estar. | Indica la ausencia, carencia o falta de algo. |
Where the eye mixes sein and sin
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses sein with sin
These two trip readers on the page rather than in the ear: sein is [ˈzaɪ̯n] while sin is [sĩn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 45642, derived from the frequency rank of both members and their visual similarity.
sein is recorded at frequency rank #45,601, classified as averb, pronounced [ˈzaɪ̯n]. sin is at rank #41, tagged as aprep, pronounced [sĩn].
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 45642, this pair ranks #130,267 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sein vs sin
Shared letters: ins. Private to "sein": e. Private to "sin": -.
"sein" · 4 letters · shape CVVC · "sin" · 3 letters · shape CVC
Known mistypes of this pair
- sein ← esin · seinn · seni · ssein
Frequently Asked Questions
Is swapping "sein" for "sin" ever safe?
Which is more common, "sein" or "sin"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sin" - compare definitions side by side with the headword page. Word entry
- This pair ranks #130,267 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sein" and "sin" also get mixed up with nearby pairs, the highest-scored neighbour is "sei vs sein". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #130,267 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.